The following books have proved thought provoking -

Three Cups of Tea by Greg Mortenson and David Relin

One man can make a difference - all it takes is a desire.

The Places In Between and

The Prince of the Marshes: And Other Occupational Hazards of a Year in Iraq

By Rory Stewart

Both provide good insights into the real situations facing the United States in combating its War on Terror.

Confessions of an Economic Hit Man by John Perkins

A view into the ugly side of capitalism.

Sleeping with the Devil by Robert Baer

A look at our dependency on foreign oil from a former CIA operative.

An Inconvenient Truth  by Al Gore

Global warming is real!  Do something to make a difference.